Fix return type of `make_progress_bar()` (#5280)
Fix return type of `make_progress_bar()` (#5280)

Fix return type of make_progress_bar()
trepmal/wp-cli,rodrigoprimo/wp-cli,aaemnnosttv/wp-cli,aaemnnosttv/wp-cli,aaemnnosttv/wp-cli,trepmal/wp-cli,rodrigoprimo/wp-cli,trepmal/wp-cli,rodrigoprimo/wp-cli